What are you doing?
I'm taking photos.
What are you doing?
I'm snorkelling.
What are you doing?
I'm building a sandcastle.
What are you doing?
I'm making a fire.
What are you doing?
I'm collecting shells.
What are you doing?
I'm flying a kite.
What are you doing?
I'm having a picnic.
What are you doing?
I'm fishing.